80836878993 has 16 divisors (see below), whose sum is σ = 122901319296. Its totient is φ = 46819549440.

The previous prime is 80836878977. The next prime is 80836879031. The reversal of 80836878993 is 39987863808.

It is not a de Polignac number, because 80836878993 - 2⁴ = 80836878977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80836871993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60962293 + ... + 60963618.

It is an arithmetic number, because the mean of its divisors is an integer number (7681332456).

Almost surely, 2^80836878993 is an apocalyptic number.

It is an amenable number.

80836878993 is a deficient number, since it is larger than the sum of its proper divisors (42064440303).

80836878993 is a wasteful number, since it uses less digits than its factorization.

80836878993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121925944.

The product of its (nonzero) digits is 125411328, while the sum is 69.

The spelling of 80836878993 in words is "eighty billion, eight hundred thirty-six million, eight hundred seventy-eight thousand, nine hundred ninety-three".